Ludovic Giuly says Barcelona will go into their Champions League clash with PSG as favourites.
Barca were held 2-2 at Sevilla on Saturday while PSG won in the French Cup.
"The quarter-final clash will be very different from the group stage. There is much more at stake this time and in football every game is different," said Giuly.
"Barça are in great shape, the system works well and the defence is very good when they lose possession of the ball."
The Frenchman added: "The Champions League title with Barça was the most exciting. It was the most important title that I won and, in addition, we did it in Paris, in my country."